Coal-separator.



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HMM um u m 00 co. novo-umm wAsmNnmN u c UNITED STATESI PATENT Carlos. 'I

JOHN R. RICHARDSON, OF sORA-NTON, PENNSYLVANIA.

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SPECIFICATION forming part of Letters Patent No. 655,580, dated August 7, 1900.

Application and .my le. 1897.

Serial No, 644,808. (No model.)

To @ZZ wia/oni, it may concern.-

Beit known that I, JOHN R. RICHARDSON,

vacitizen'of theUnited States, residing 'at Scranton, in the county of Lackawanna and State of Pennsylvania,'have invented certain ie slate and culm. to therefuse and saving the coalfvlicih is oa'die'ref shape and is tTi'refore not adapted to pass-through the narrow openings, and this coal as it comes froiun the screen banks against the agitator. In the i'otation ofthe agitator, which is in the form of a mutilated cylinder, the coal which has gathered in the pocket formed by the concave bottom ofthe grating and the cutaway part of the cylinder is elevated and carried over to the opposite side of the separator, the thin pieces of slate and culrn dropping down through the spaces in the agitator and grating. The coal then passes down to a raised grating, which elevates the coal and the remaining refuse, discharging the coal into an overchute, While therefuse passes down the main chute, where it may be subjected to the action of another raised portion and overchute.

In the accompanying drawings vI have shown, in Figure 1, a plan View of my separa- I tor, Fig. 2 being a section of the same.

The coal enters in the upper end of the chute frou1 the.sorecn ,now in use,.and.,t passes down the incline A to a more abrupt incline or dip B, made by a series of bars a, in the fprm of a grating, this grating connecting the inciines A and C. The spaces between the grate-bars are eucient to permit of the passage of slate and oulm and reuse of this nature. In order to agit-ate l the coal and refuse as it comes down the inoline, and thus more perfectly separate it,

lthan'the spaces between the gratebars, and

'the grate-bars, as shown at f. As the edges to the grating and rotated by any suit-able power.

The agitator is preferably composed of 'a shaft journaled in the side walls of the chute and Ya series' of disks b, mutilated at opposite points by havi ngquarter-seotions cutout,ileav ing spacesc. Thedisks are separated by spaces rl, providingfor 4the discharge ofl the enlm and slate. These spaces are preferably wider in order to prevent clogging I prefer to 1nake'- thedisks b with groovedV peripheries e,y adapt-z ed to closely fit the corresponding vedges of of the disks b project above the level of the upper incline A, the 'coal' and refuse banks cut-out portions forni pockets iuto'w'vvhich the* coal and refuse drop, the slate and clin passing through the spaces between the'disks vand the grate-bars. In thezrotation of the v agitator the contents of the pocket remaining' is carried over and dischargednpon-the in oline O.- At the bottom of this incline therel 7S is a second grating-E,v its bars being given the form of a swell, and the end of the in.-

oline extends to'an opening g', through Whiglyy passes more of the refuse. As the mass slides up over the bent gratebars E some of the refuse passes through which may have clean coal bounds upwardly by reasouof the shape of the grating E and is caught by an overchute F, located above the main chutev and directly in line with the .swell or curve of the grating E, andthe coal being lighter is elevated more than the refuse and is caught by the overchute, which carries it to apoint of delivery, While' the refuse which does not pass through the grating falls through the opening g in the main chute. The overchnte may be a single chute, or it may have a double discharge, 'a trough a running off A to each eide.

What I claim is,

1. A coal-separator comprising an inclined chute, a concave grating connecting the upper and lower parte ofv thevchute'and ja roprovidean agitator D, located in proximity 5o I 8o` passed the agitator and first grating'and the 2 l A. 655,580 i tary agitator located above the grating within the concavity and acting in connection there- -grating of concave forni intermediate of the upper and lower sections of the'chute and an agitator located in the concav'ity of the grating, said agitator being formed of a series of disks having a cut-away portion adapted to elevate the coal and discharge' the slate and Io culm through the openings in the agitator and grating, sbstantially as described.

In testimony whereof I aiix my signature in presence vof two witnesses.

' JOHN R. RICHARDSON. Witnesses:

PATRICK RAHARAN, ARTHUR L. LORD. 

